Logistics

Preserve the shipment paperwork and recorded handoff checks as one dated file set.

Preserve the shipment paperwork and recorded handoff checks as one dated file set. Keep your original source records together, then date the exact files. It does not establish safe classification, correct packaging or placarding, actual handoff, signatures, usable emergency access or transport compliance.

Try a file locally

Your photos and files stay on your device, so keep them.

EXAMPLE

Hazardous materials handoff with emergency information and placarding confirmed

1 Nov 2026

Authority time: 14:02 UTC · example
Bitcoin block time: 14:10 UTC · example
Last checked: 15:02 UTC · example

✓ Dated◆ Permanent

Now keep it safe: three things

Keep your photos and files unedited. The receipt only matches the originals. Put them in an album such as “My records”.
Save this receipt to your camera roll.
Keep the receipt file too. The image is a handy copy; checking needs the file.
Email it to yourself.Email it to myself
Your mail app opens a draft. Attach your receipt image and receipt file. Don’t attach your photos or documents. Timevolt does not send it or know whether it was sent.

Your record, one step at a time.

Your photos and files stay on your device, so keep them.

Local preview: files are fingerprinted here. Notes and progress stay in this browser. Keep downloaded copies; browser storage is not a backup.

1. Original files for this record0 items

How?

Add the exact original files for this part of the record. Keep them unchanged; a different export or edit has a different fingerprint.

Add files

Add link and screenshots

Link to recordAdd screenshots

The link is recorded, not fetched or verified.

2. Write down anything you need to remember0 items

How?

Record the date, time, place and who you spoke to. New notes are saved separately rather than editing an old note.

How to keep notes that hold up

Write it down

New note

By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.

Photo of note

By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.

How to keep notes that hold up

Write notes as soon as you can. Keep the original account rather than replacing it later; the venue decides what weight it gets.

Write it down straight away, on paper or in the box on a step.
Put the date, time and place at the top, and who you spoke to.
Use their words where you can; separate what you saw from what you were told.
Sign or initial a paper note, photograph it and add the photo.
Never edit an old note. Add a new dated entry when something changes. A device save time is not independent time evidence or proof of event order.

Hazardous materials handoff with emergency information and placarding confirmed

01 · Keep the exact files

Keep the original files for hazardous materials handoff with emergency information and placarding confirmed. Include any existing photos, signed records and source-system exports.

Records to keep: Photos of placards, shipping papers, seal; co-signed handoff between shipper and driver

Hazardous materials handoff with emergency information and placarding confirmed

02 · Date the file’s code

Your device fingerprints the selected file or manifest. Dated follows an independent timestamp; Permanent follows Bitcoin anchoring.

An independent time, tied to the exact bytes.

Hazardous materials handoff with emergency information and placarding confirmed

03 · Keep the evidence

Keep the original files and complete receipt separately, alongside any existing venue, signature and workflow records.

Keep the originals too. A changed or compressed copy has a different fingerprint.

Try a file. It stays here.

Make a test receipt on this device.

By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.

Choose a file

or drop a file here

Real cases: why the saved copy matters.

Real cases where dated records mattered. We don’t claim a time receipt would have changed the result.

US federal Maryland · 2025

Ship hazardous goods with the required papers

A jury found a person guilty over pesticide sales and reckless shipping without the required papers. The judge kept those findings when asked to throw them out. No later appeal result was checked.

Summarized on Oct 29, 2026

Read the source ›

US federal · 2024

Put required hazard details on shipping papers

A watchdog said goods were shipped with papers that lacked required hazard facts, and training records had gaps. It suggested fines in a September 2024 notice and gave ways to reply. No final ruling was in the record.

Summarized on Oct 29, 2026

Read the source ›

US federal aviation · 2025

Declare battery shipments and include emergency details

Air safety staff said a bike firm shipped batteries without declaring them or giving required hazard facts and training. They suggested a fine and sent a letter of charges. No final ruling or paid fine was reported.

Summarized on Oct 29, 2026

Read the source ›

What courts, schemes and regulators say.

Positions below refer to the cited rule or record type, not endorsement of Timevolt. This service is not represented as an eIDAS qualified timestamp provider. A non-qualified timestamp does not receive the qualified timestamp presumption.

Needs something else · US federal transport within applicable scope

Hazardous Materials Regulations

49 CFR Part172 SubpartG emergency-response information

Information must be immediately available during covered transport and handling, subject to exceptions. A fingerprint cannot provide its contents or establish access by responders.

Source summary as of 2026-10-29. Check the current source and applicable local rules.

Read the source

Needs something else · US federal hazmat offerors within applicable scope

Hazardous Materials Regulations

49 CFR 172.201 shipping-paper preparation and retention

Requires legible content, retained copies or electronic images and acceptance-date records; rules for electronic information during rail transport are specific. No blanket paper-replacement or timestamp approval.

Source summary as of 2026-10-29. Check the current source and applicable local rules.

Read the source

Other ways to do this

Prices change. Check each provider’s site for current prices and service details.

Labelmaster DGIS
Provides shipping templates, electronic signatures, shipment history and dangerous-goods document preparation.
Visit site
R and L shipment checklist
Provides downloadable carrier checklist for shipping-paper contents and packaging checks.
Visit site
DOT Check the Box
Provides official preparation overview for documenting a shipment.
Visit site

Related workflows.

Proves / Doesn’t prove

Proves

A completed time receipt shows that the exact selected file existed by the independently witnessed time. You can check whether a later copy has the same bytes. It does not establish creation time, authorship, identity, event order, location or the truth of the contents.

Doesn’t prove

It does not establish safe classification, correct packaging or placarding, actual handoff, signatures, usable emergency access or transport compliance.

These are the bounds of a completed proof. The local tester does not establish any time. The chosen court, scheme or regulator decides what to accept.

Questions, answered plainly.

Your file stays on your device. During normal receipt creation, your device sends a randomized code made from its fingerprint, plus encrypted recovery data. It doesn't send the plain fingerprint or the random value that opens the code. Keep the original file and the complete receipt for checking. Privacy Policy.

Can a hash replace the emergency information?

No. SubpartG requires the information itself to be immediately available for covered materials and handling.